There are 6 IL-4 protein produced in house with high quality which are covering various species. Among these IL-4 proteins, there are 2 Mouse IL-4 protein, 3 Human IL-4 protein, 1 Canine IL-4 protein. All these IL-4 protein are expressed by different host cells. 1 IL-4 proteins are expressed by Baculovirus-Insect Cells , 5 IL-4 proteins are expressed by E. coli . These IL-4 proteins are produced with different tags, such as His Tag.